@inproceedings{www2021,
  author    = {Cen Chen and
               Chengyu Wang and
               Minghui Qiu and
               Dehong Gao and
               Jinbo Lin and
               Li Wang},
  title     = {Cross-domain Knowledge Distillation for Retrieval-based Question Answering Systems},
  booktitle = {Proceedings of the Web Conference 2021},
  pages     = {2613--2623},
  year      = {2021}
}